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- Graphical analysis of the creation, use, renaming and deletion of Oracle table space
- This article brings you relevant knowledge about Oracle. It mainly introduces issues related to table spaces, including the creation, use, renaming, deletion of table spaces, etc. Let’s take a look at it together. I hope it will help Everyone is helpful.
- Oracle 3124 2022-06-16 20:59:21
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- Example to solve the problem that Oracle cannot use more than 1000 in statements
- This article brings you relevant knowledge about Oracle. It mainly introduces how to use the in method to query records. If the number of parameters after in exceeds 1000, an error will occur and JDBC will throw "java. sql.SQLException: ORA-01795: The maximum number of expressions in the list is 1000" exception. Let's take a look at how to solve it. I hope it will be helpful to everyone.
- Oracle 2397 2022-06-13 18:11:14
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- How to solve protocol adapter error in oracle 11g
- Three methods: 1. Click on the program in Start, find the service option in the management tool, and start the "OracleOraDb11g_home1TNSlistener" service in the service panel; 2. Start "OracleServiceBOOKSALES" in the service; 3. Use regedit to enter "HKEY_LOCAL_MACHINESOFTWAREORACLEHOME" and change " ORACLE_SID" can be set to "database SID".
- Oracle 3744 2022-06-13 16:11:17
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- What is oracle index inversion
- In Oracle, index flipping refers to byte reversal of the index key value of the index column when creating an index, so as to achieve the purpose of dispersed storage of different child node blocks. It is a branch of the "B-tree" index; use The reverse index can reverse the key values of the index column and disperse the sequential key values into different leaf blocks, thus reducing contention for index blocks.
- Oracle 2285 2022-06-13 16:28:00
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- What are the roles in oracle
- Roles in Oracle: 1. "connect role" connection role, temporary users refer to users who do not need to create tables; 2. "resource role" resource role, which provides users with additional permissions to create their own tables; 3. "dba role" "Database Administrator role, including unlimited space quotas and the ability to grant various permissions to other users.
- Oracle 3824 2022-06-13 15:45:36
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- How to use type in oracle
- Type in oracle: 1. Used to define the type of data, the syntax is "CREATE OR REPLACE TYPE ED_DYNAMIC_PROC_OBJ AS OBJECT (TYPE type)"; 2. Used to declare the current element type to be a known type, the syntax is "vempno emp.empno%type;".
- Oracle 3781 2022-06-13 15:27:53
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- What is the temporary table in oracle stored procedure
- In Oracle, the temporary table of a stored procedure is a table used to temporarily store data; when a transaction or session ends, the data in the temporary table will be automatically cleared by the database. The temporary table can be divided into transactions according to different life cycles. Level temporary tables and session-level temporary tables, the creation syntax is "create global temporary table temporary table name on commit preserve/delete rows".
- Oracle 4082 2022-06-13 15:16:38
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- How to close index in oracle
- In Oracle, you can use the "alter index" statement to close the index. This statement can change the status of the index. The syntax is "alter index index_name unusable;"; this statement means to disable the specified index, and unusable means that the status of the current index is invalid.
- Oracle 4906 2022-06-13 14:58:30
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- How to solve the 1017 error of imp in oracle
- Solution: 1. Use the "grant resource/connect to username" statement to add "resource / connect" permission to the user; 2. Enter the user name in the format of "test_opr as sysdba" in the prompt below the error, and press Enter. Just the user’s login password.
- Oracle 4947 2022-06-13 14:26:32
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- How to query oracle isolation level
- How to query the isolation level in Oracle: 1. Use the "declare trans_id... begin trans_id :=...;end;" statement to put the current session in a transaction; 2. Use "SELECT s.sid, s.serial# ,CASE...WHEN 0 THEN '....'ELSE '...' END AS..." statement can query the isolation level.
- Oracle 7352 2022-06-13 10:58:33
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- How to convert hexadecimal to decimal in Oracle
- In Oracle, you can use the "to_number()" function to convert hexadecimal to decimal data. This function is used to convert a string into a numerical format, and the parameters in the function need to be enclosed in single brackets. The syntax It is "select to_number('hexadecimal number','xx') from dual".
- Oracle 4996 2022-06-13 10:46:48
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- How to query table space size in oracle
- In Oracle, you can use the SELECT statement to query the size of the table space. The syntax is "SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size FROM dba_tablespaces t, dba_data_files d WHERE...GROUP BY. .."; Table space is just a logical concept, and data files are what actually store data.
- Oracle 30857 2022-06-13 11:03:27
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- How to query historical sql in oracle
- Method: 1. Use "select * from v$sqlarea t where t.SQL_table name like'...' order by..." statement to query the historical SQL of the specified table; 2. Use "select * from v$sqlarea t where t.PARSING_SCHEMA_NAME in ('username') AND SQL_table name like'...'" statement queries the user's historical sql for the table.
- Oracle 19707 2022-06-13 11:14:02
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- How to delete dblink in oracle
- How to delete dblink in Oracle: 1. Use the "drop public database link dblink name;" statement to delete the dblink with public permissions; 2. Use the "drop database link dblink name;" statement to delete the dblink with private permissions.
- Oracle 9681 2022-06-13 10:19:25
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- Oracle has several indexes
- There are six types of indexes in Oracle: 1. "B*" number index, which can provide fast access to a row or a row set based on the key; 2. Bitmap index, suitable for highly repetitive and usually read-only data; 3. Function-based Index, which stores the result of a function calculation in the column of the row; 4. Application domain index, which is an index built and stored by yourself; 5. HASH index, you must use a HASH cluster to use this index; 6. Partition index, Split an index into multiple fragments.
- Oracle 9008 2022-06-10 17:39:39
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